Multi-optical-path photoelectric safety apparatus
US6979814B2 · kind B2 · utility
29Cited by
7References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 20, 2002 |
| Grant date | Dec 27, 2005 |
| Priority date | — |
| Expiry date | May 23, 2023 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16P3/144
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A multi-optical-path photoelectric safety apparatus is provided that has a light emitting unit, a light receiving unit and a control unit for controlling each optical path. A light block substance sensing function for a multi-optical-path light curtain is also provided to sense an object between the light emitting unit and the light receiving unit. A muting area setting unit is also provided that can be taught how to set an area for exerting a muting function. The muting function can be provided only in a partial area of the light curtain by using the muting area setting unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.